Hunter - I-40 - 4" Pop-Up Stainless Steel Riser, Adjustable Arc With Check Valve

The I-40 is a tough commercial rotor that delivers water with accuracy and efficiency at distances up to 70'. Featuring diverse three-port nozzle options, a non-strippable drive, and a thick rubber cover built to prevent injury; it's no wonder this rotor is found in more stadiums than any other in the world. With the strength of stainless steel, the I-40 is built to last in the harshest sports, public park, and commercial environments. If efficiency, effective irrigation, and beautiful results are the goal, the I-40 is the irrigation professional's best solution..

Key Features:

• 4" stainless steel pop-up riser with adjustable arc from 50° to 360°
• Opposing nozzle model ensures excellent water distribution
• Automatic arc return prevents gear damage and ensures original setting recovery
• Non-strippable, vandal-proof drive mechanism for long-term durability
• Part- and full-circle operation in one unit with patented non-reversing 360° design
• FloStop® control shuts off individual heads during maintenance
• Drain check valve prevents low-head drainage (up to 10' of elevation)

Construction & Durability:

• Heavy-duty stainless steel riser enhances strength in public and sports environments
• Thick rubber cover reduces risk of injury and protects internals
• Weather-resistant, built to withstand vandalism and tough outdoor conditions

Performance & Functionality:

• Radius: Up to 70'
• Nozzle options: 12 (I-40: #8–#25, I-40-ON: #15–#28)
• Factory-installed nozzles with through-the-top arc adjustment
• Quick check arc mechanism for simplified maintenance
• Water-lubricated gear drive for smooth, consistent operation

Ease of Installation & Use:

• Slotted and headed set screw allows adjustment with a Hunter wrench or flathead screwdriver
• Pre-assembled for faster setup
• Built-in check valve and arc return reduce follow-up maintenance

Technical Specifications:

• Operating Pressure Range: 50–100 PSI (typical)
• Flow Rate: Varies by nozzle size
• Spray Radius/Coverage Area: Up to 70'
• Available Sizes/Models: 4" Pop-Up
• Thread Type: Female-threaded
• Pressure Regulation: No (external regulation recommended if needed)
• UV-Resistant Components: Yes
• Arc Adjustment Range: 50°–360°
• Body Diameter: Approx. 2.5"
• Pop-Up Height: 4"

Installation & Application:

• Recommended Uses: Sports fields, commercial landscapes, public parks, large turf areas
• Installation Method: Buried in-ground connection with PVC or poly pipe systems
• Soil & Climate Suitability: Performs well in sandy, clay, and mixed soils; ideal for temperate and high-use climates

Compatibility & Optional Accessories:

• Compatible with Hunter nozzle racks #8–#28 (standard and ON versions)
• Optional accessories: Reclaimed water ID caps, swing joints, pressure regulators